S Mohanram, president, Consumer Protection Council, Tirunindravur says, “It is a plain fact that some flyovers do not attract vehicles. The police and other stakeholders including state transportation department should conduct a thorough study across the city to find out points where traffic congestion takes place largely and divert the vehicles through flyovers, which sometime remain empty.” He added that some flyovers were built after poor planning and are unable to usher vehicles in large numbers. Another issue is that of encroachment around the flyovers.